摘要
在自然状态和接触面掺泥两种情况下,进行了砂岩、泥岩破裂面及其互层接触的摩擦试验。结果表明:在接触面掺泥时,抗剪强度的粘聚力和内摩擦角都有不同程度的降低,其中粘聚力下降明显,并且摩擦位移与剪应力关系曲线有明显不同,而且粘滑现象明显减弱。结合摩擦试验,研究了砂岩、泥岩在摩擦前后破裂面表面形态的变化,分析了它们的粗糙度及其起伏特性在摩擦前后的变化规律,以及表面特性和摩擦强度的关系。
With natural surface and blended mud surface, friction properties of sandstone, mudstone＇ s broken surface is tested. It is shown that the strength of surface blended mud is reduced. It is different of the curves of stress-displacement of natural surface and bended mud surface, and the phenomena of mucosity are weakened when the contact surfaces are blended mud. Researching the topography character both fore and after the friction test, degree of roughness and fluctuation of surface are analyzed with statis- tics theory, and the relation of friction strength and topography character is approached.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2005年第5期37-40,共4页
Coal Geology & Exploration
基金
国家自然科学基金重大项目(50490270)
国家基金委创新群体基金资助项目(50221402)
教育部科学技术研究重大项目资助(10405)
关键词
摩擦试验
摩擦特性
强度
表面形态
friction test
friction property
strength
topography character
